EP 3156471 A1 20170419 - PROPPING AGENT AND METHOD FOR PLACING SAME IN A HYDRAULIC FRACTURE
Title (en)
PROPPING AGENT AND METHOD FOR PLACING SAME IN A HYDRAULIC FRACTURE
Title (de)
STÜTZMITTEL UND VERFAHREN ZUR PLATZIERUNG DAVON IN EINER HYDRAULISCHEN FRAKTUR
Title (fr)
AGENT DE SOUTÈNEMENT ET PROCÉDÉ DE DISPOSITION DE CE DERNIER DANS UNE FISSURE DE FRACTURATION HYDRAULIQUE D'UNE STRATE
Publication
Application
Priority
RU 2014000233 W 20140402
Abstract (en)
The present disclosure relates to production of fluids from subterranean formations and can be applied for stimulation of the flow through the formation by means of hydraulic fracturing. More particularly, it relates to creation of proppants with soluble coating, and preparing fluid material for fracturing operations and for enhancing the efficiency of heterogeneous proppant placement in a hydraulic fracture. The present disclosure is aimed at the improvement of heterogeneous proppant placement being done with the use of the currently available equipment-based way of alternating proppant-laden and proppant-free stage delivery. It is achieved by creating a proppant with soluble coating, by creating a material on their basis to be used as packing for formation fracturing operations, and by providing an improved hydraulic fracturing method with heterogeneous proppant placement in a hydraulic fracture. The technical result is to provide improved rheological stability of the fluid in a proppant-laden pulse and a higher washing stability of a proppant stage, in the reduced undesirable effect of changes in the concentration of additives, which ultimately results in fracture width reduction and in optimal placement of proppant-laden stages. Subsequently, such changes also lead to higher hydraulic fracture conductivity parameters
IPC 8 full level
C09K 8/80 (2006.01); C09K 8/92 (2006.01); E21B 43/267 (2006.01)
CPC (source: EP US)
C09K 8/68 (2013.01 - EP US); C09K 8/70 (2013.01 - EP US); C09K 8/805 (2013.01 - EP US); C09K 8/88 (2013.01 - EP US); C09K 8/92 (2013.01 - EP US); E21B 43/26 (2013.01 - EP US); E21B 43/267 (2013.01 - EP US); C09K 8/685 (2013.01 - EP US); C09K 8/882 (2013.01 - EP US); C09K 8/885 (2013.01 - EP US); C09K 8/887 (2013.01 - EP US); C09K 8/90 (2013.01 - EP US); C09K 2208/26 (2013.01 - EP US)
Citation (search report)
See references of WO 2015152755A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2017044427 A1 20170216; AU 2014389579 A1 20161103; CA 2944148 A1 20151008; CN 106661442 A 20170510; EP 3156471 A1 20170419; MX 2016012778 A 20161214; RU 2016138117 A 20180504; RU 2016138117 A3 20180504; WO 2015152755 A1 20151008
DOCDB simple family (application)
US 201415301643 A 20140402; AU 2014389579 A 20140402; CA 2944148 A 20140402; CN 201480078817 A 20140402; EP 14888550 A 20140402; MX 2016012778 A 20140402; RU 2014000233 W 20140402; RU 2016138117 A 20140402